There are a lot of non touristy things.
If you like surfing you can learn and go surfing there.
The local drinks there are
1. Bintang beer (try the raddler) it's something different
2. Bali Hai is also a local beer
3. Prost is another local beer. You can relax in sanur for a relaxed beachwalk. Or even nusa dua or ubud for that matter is decent without much public